Fumigator.



W. H. GRIFFITHS.

FUMIGATOR.

APPLICATION FILED APR. 30. 1914.

Patented Dec. 7, 1915.

COLUMBIA PLANOGRAPH co, WASHINGTON, D. c.

WILLIAM HARRY GRIFFITHS, OF HEREFORD, ENGLAND.

FUMIGATOR.

Specification of Letters Patent.

Patented ea. 7, 1915.

Application filed Ap1il30, 1914. Serial No. 835,509.

To all who m it may concern:

Be it known that I, VILLIAM HARRY GRIFFITHS, a subject of His Majesty the King of England residing at Hereford, England, have invented certain new and useful Improvements in F umigators, of which the following is a specification.

This invention has relation to an improved construction of fumigating, d1sinfecting, deodorizing, and the like appliance, particularly useful for stupefying bees or fuinigating plants of the kind consisting of a tobacco or the like bowl combined with an aspirator or ejector for producing by the flow of fluid therethrough a difference in pressure on the opposite sides of the bowl containing the material to be burned so as to burn and draw the smoke of the material into a directing and delivering passage for ejection therefrom by the aspirating current, this current being adapted to be produced either by blowing with the mouth or by the action of an air pump, pneumatic bulb or the like.

According to this invention the ejector, which is to be combined to function in known manner with a pipe stem, which extends on opposite sides of the pipe bowl, is constructed by infolding or inbending the material of a length of pipe so that a tapering constricted passage is formed the exterior surface of which is at no point at a greater radial distance from the axis of the pipe than the length of the radius of the pipe.

The ejector is conveniently made of a thin sheet metal curved into pipe form but other materials admitting of the infolding or inbending of the pipe wall for the before described purpose may be adopted.

In the hereinafter described embodiment the ejector is formed in one piece with a cylindrical supply pipe and is formed by infolding or inbending the material on one side of the axis of the pipe length so that a tapering and substantially channel or saddle shaped passage is formed by which air forced through the supply pipe is caused to issue with sufficient force from the contracted passage to induce air to pass down through the burning tobacco and to be delivered out of the end of the delivery pipe stern in which the tapered and contracted end. of the supply tube has been inserted and the connection therewith frictionally established; this connection being facilitated by progressively reducing the lap of the joint of the delivery pipe stem toward the end for receiving the tapered and con tracted end of the supply pipe.

In order that the invention may be clearly understood and readily carried into practice reference may be had to the accompanying drawings on which 1 Figure 1 is an elevation of a convenient and advantageous form of fumigator ac cording to this invention. Fig. 2 is a plan view thereof. Fig. 3 illustrates a section on line 3 3 of Fig. 2. Fig. l is an enlarged plan view of the nozzle of the tube or pipe 0, and Fig. 5 an end view thereof. Fig. (3

illustrates a bulb attached to the end of the tube or pipe 0. Fig. 7 illustrates how the said directing and delivering tube or pipe may have a slight conoidal formation at the unction portion thereof.

The fumigator as illustrated on the drawlngs comprises a directing and delivering tube or pipe a, a tobacco or the like pipe bowl 6 mounted on the latter intermediate of its ends and preferably lined with plaster of Paris and a tube or pipe 0 extending into and being removably secured to the said tube or pipe a; the pipe bowl. being filled with tobacco preferably of a cheap and strong nature such as shag, or any other suitable smoking or fume producing mixture. The forward portion of the tube 0, e. 9., the part which extends into the tube a, is contracted so as to form a nozzle cZ comprising an air-outlet e and a smoke-passage f. As will be seen from Fig. 3 of the drawings, the forward end of the nozzle d extends beyond and forwardly of the inlet hole 9 of the bowl 6 so that when a flow of air or gas is produced through the tube 0 a suction current of air will be produced through the tobacco or the like in the bowl I) in the direction of the arrows in Fig. 3 thereby causing the tobacco to burn and the resultant smoke to pass from the bowl through the smoke-passage into the tube a and to pass out therefrom owing to the forced draft created in the pipe a.

Owing to the free end of the nozzle lying forwardly of the smoke-inlet-hole g and owing to the contracted outlet the passage of fumes or smoke through the tubes 0 is practically prevented.

The construction of the fumigator admits of its being actuated by lung blowing; this without necessitating the smoke or fumes being drawn into the mouth. For this purpose a suitably shaped mouth piece may be attached to the free end of the tube a; or, as illustrated in Fig. 6 of the drawings, thenecessary flow of air or gas through the tube a. may be arranged to be produced by anairbulb 71. attached to the free end of the pipe 0. Of course any other suitable means as for example an. air-pump or a pneumatic tire inflator may be employed for actuating the device.

By introducing the forward or free end of the tube a for example into a bee-hive and bloWing'the-fumes into the same the Y bees can be fumigated and stupefied and the honey removed from'the hive or the Whole hive can be removed to another place Without the danger of being stung by the bees.

Or by appropriately positioning the delivery end of the tube a, for example in green houses any desired local fumigationor the like may be eii'ected.

If desired a suitable filter, such as cotton Wool or the like, may be introduced into the tube 41 and/or tube 0.

The fumigator can be made of any suit- M able material and the construction thereof maybe varied, for example the nozzle d may be made integral with the tube a'and the-tube 0 pushed over or into thenozzle'end of the former, or the nozzle d maybe made separate and adapted to fit into the tube a or tube 0. r

The delivery end of the tube 0 may be furnished with a distributer if desired.

The invention may be used for fumigating, disinfecting, deodorizing and the like purposes generally.

Having thus described my invention What I claim and desire to secure by Letters Patent is Device of the class described; comprising in combination a directing and delivering pipe; a bowl mounted on and communicating with said directing and delivering pipe intermediate of the ends thereof; an ejector passing into the rear portion of the said directingand delivering pipe, said ejector consisting of a pipe whose wall is infolded so as-to project a tapering constricted passage forwardly from a part corresponding in contour with and adapted to fit frictionally therear part of said directing and delivering pipe; and a supply pipe combined with said ejector, substantially as described. r

In testimony whereof I aflix my signature 1n presence of two witnesses.

WILLIAM HARRY GRIFFITHS.

-Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

